| ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -tail-dup-placement=0 | FileCheck %s |
| |
| ; Test memcpy, memmove, and memset intrinsics. |
| |
| target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" |
| target triple = "wasm32-unknown-unknown" |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i1) |
| declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i1) |
| declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i1) |
| |
| ; Test that return values are optimized. |
| |
| ; CHECK-LABEL: copy_yes: |
| ; CHECK: i32.call $push0=, memcpy@FUNCTION, $0, $1, $2{{$}} |
| ; CHECK-NEXT: return $pop0{{$}} |
| define i8* @copy_yes(i8* %dst, i8* %src, i32 %len) { |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %len, i1 false) |
| ret i8* %dst |
| } |
| |
| ; CHECK-LABEL: copy_no: |
| ; CHECK: i32.call $drop=, memcpy@FUNCTION, $0, $1, $2{{$}} |
| ; CHECK-NEXT: return{{$}} |
| define void @copy_no(i8* %dst, i8* %src, i32 %len) { |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %len, i1 false) |
| ret void |
| } |
| |
| ; CHECK-LABEL: move_yes: |
| ; CHECK: i32.call $push0=, memmove@FUNCTION, $0, $1, $2{{$}} |
| ; CHECK-NEXT: return $pop0{{$}} |
| define i8* @move_yes(i8* %dst, i8* %src, i32 %len) { |
| call void @llvm.memmove.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %len, i1 false) |
| ret i8* %dst |
| } |
| |
| ; CHECK-LABEL: move_no: |
| ; CHECK: i32.call $drop=, memmove@FUNCTION, $0, $1, $2{{$}} |
| ; CHECK-NEXT: return{{$}} |
| define void @move_no(i8* %dst, i8* %src, i32 %len) { |
| call void @llvm.memmove.p0i8.p0i8.i32(i8* %dst, i8* %src, i32 %len, i1 false) |
| ret void |
| } |
| |
| ; CHECK-LABEL: set_yes: |
| ; CHECK: i32.call $push0=, memset@FUNCTION, $0, $1, $2{{$}} |
| ; CHECK-NEXT: return $pop0{{$}} |
| define i8* @set_yes(i8* %dst, i8 %src, i32 %len) { |
| call void @llvm.memset.p0i8.i32(i8* %dst, i8 %src, i32 %len, i1 false) |
| ret i8* %dst |
| } |
| |
| ; CHECK-LABEL: set_no: |
| ; CHECK: i32.call $drop=, memset@FUNCTION, $0, $1, $2{{$}} |
| ; CHECK-NEXT: return{{$}} |
| define void @set_no(i8* %dst, i8 %src, i32 %len) { |
| call void @llvm.memset.p0i8.i32(i8* %dst, i8 %src, i32 %len, i1 false) |
| ret void |
| } |
| |
| |
| ; CHECK-LABEL: frame_index: |
| ; CHECK: i32.call $drop=, memset@FUNCTION, $pop{{[0-9]+}}, $pop{{[0-9]+}}, $pop{{[0-9]+}}{{$}} |
| ; CHECK: i32.call $push{{[0-9]+}}=, memset@FUNCTION, ${{[0-9]+}}, $pop{{[0-9]+}}, $pop{{[0-9]+}}{{$}} |
| ; CHECK: return{{$}} |
| define void @frame_index() { |
| entry: |
| %a = alloca [2048 x i8], align 16 |
| %b = alloca [2048 x i8], align 16 |
| %0 = getelementptr inbounds [2048 x i8], [2048 x i8]* %a, i32 0, i32 0 |
| %1 = getelementptr inbounds [2048 x i8], [2048 x i8]* %b, i32 0, i32 0 |
| call void @llvm.memset.p0i8.i32(i8* align 16 %0, i8 256, i32 1024, i1 false) |
| call void @llvm.memset.p0i8.i32(i8* align 16 %1, i8 256, i32 1024, i1 false) |
| ret void |
| } |
| |
| ; If the result value of memset doesn't get stackified, it should be marked |
| ; $drop. Note that we use a call to prevent tail dup so that we can test |
| ; this specific functionality. |
| |
| ; CHECK-LABEL: drop_result: |
| ; CHECK: i32.call $drop=, memset@FUNCTION, $0, $1, $2 |
| declare i8* @def() |
| declare void @block_tail_dup() |
| define i8* @drop_result(i8* %arg, i8 %arg1, i32 %arg2, i32 %arg3, i32 %arg4) { |
| bb: |
| %tmp = icmp eq i32 %arg3, 0 |
| br i1 %tmp, label %bb5, label %bb9 |
| |
| bb5: |
| %tmp6 = icmp eq i32 %arg4, 0 |
| br i1 %tmp6, label %bb7, label %bb8 |
| |
| bb7: |
| call void @llvm.memset.p0i8.i32(i8* %arg, i8 %arg1, i32 %arg2, i1 false) |
| br label %bb11 |
| |
| bb8: |
| br label %bb11 |
| |
| bb9: |
| %tmp10 = call i8* @def() |
| br label %bb11 |
| |
| bb11: |
| %tmp12 = phi i8* [ %arg, %bb7 ], [ %arg, %bb8 ], [ %tmp10, %bb9 ] |
| call void @block_tail_dup() |
| ret i8* %tmp12 |
| } |
| |
| ; This is the same as drop_result, except we let tail dup happen, so the |
| ; result of the memset *is* stackified. |
| |
| ; CHECK-LABEL: tail_dup_to_reuse_result: |
| ; CHECK: i32.call $push{{[0-9]+}}=, memset@FUNCTION, $0, $1, $2 |
| define i8* @tail_dup_to_reuse_result(i8* %arg, i8 %arg1, i32 %arg2, i32 %arg3, i32 %arg4) { |
| bb: |
| %tmp = icmp eq i32 %arg3, 0 |
| br i1 %tmp, label %bb5, label %bb9 |
| |
| bb5: |
| %tmp6 = icmp eq i32 %arg4, 0 |
| br i1 %tmp6, label %bb7, label %bb8 |
| |
| bb7: |
| call void @llvm.memset.p0i8.i32(i8* %arg, i8 %arg1, i32 %arg2, i1 false) |
| br label %bb11 |
| |
| bb8: |
| br label %bb11 |
| |
| bb9: |
| %tmp10 = call i8* @def() |
| br label %bb11 |
| |
| bb11: |
| %tmp12 = phi i8* [ %arg, %bb7 ], [ %arg, %bb8 ], [ %tmp10, %bb9 ] |
| ret i8* %tmp12 |
| } |